[STABLE 2.4G WIRELESS CONNECTION]?104 Keyboard size is 13.53 x 4.2 x 1.17 inches. Mouse size is 3.42 x 1.86 x 0.96 inches. Enjoy a strong and reliable wireless connection with a range of up to 10 meters (300 inches) for the keyboard and mouse combo. They use a shared Nano receiver that is conveniently stored in the bottom of the mouse, and no additional software installation is required. Just plug and play, keep your desk clean and tidy. .? [FULL-SIZE WIRELESS KEYBOARD AND SILENT MOUSE]? Thanks to the silent micro motion technology, mouse clicks are virtually silent, eliminating annoying tapping noises that may disturb you and your family. The wireless mouse has multiple DPI levels (1600) for fast and precise cursor control while maintaining silent operation. Whether you're working or playing, you'll never have to worry about disturbing others' rest. .? [WIDE COMPATIBILITY]? Wireless Keyboard - Our wireless computer keyboard features 12 function keys for quick access to music, volume, mail and more (please note that the hotkeys may not be fully compatible with Mac systems). This keyboard mouse combo is compatible with a variety of operating systems, including Windows XP/ME/Vista/7/8/10/11. It works seamlessly with devices with a USB port, such as PCs, laptops, MacBooks, desktops, Chromebooks, and even Smart TVs. .? [ERGONOMIC DESIGN]? The keyboard is designed with a tilt angle that promotes a comfortable typing position. The wireless mouse features a sweat-resistant and skin-friendly surface with a contoured shape that provides comfortable working for hours. If you encounter any problems with our product, exceed Amazon's period or receive a defective product, please us via Amazon email. We are committed to providing you with satisfactory solutions. .? [HOW TO INSTALL BATTERIES]? Wireless keyboards use one AA alkaline battery, Wireless mice use one AA alkaline battery. (2 AA batteries are not included). Attention - The NANO receiver for the keyboard and mouse is on the back of the mice. .? [WARRANTY]? We a three-year worry- warranty and a 60-day money-back guarantee under manual use, and you will have a brand one waiting for you. If you have any questions or concerns about our wireless keyboard and mouse set, please do not hesitate to us. Your satisfaction is our top priority.